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Atmospheric frontal gravity waves observed in satellite SAR images of the Bohai Sea and Huanghai Sea

Acta Oceanologica Sinica 2010年第5期29卷 35-43页

作者： LIU Shuming LI Ziwei YANG Xiaofeng Pichel William G YU Yang ZHENG Quanan LI Xiaofeng The First Institute of Oceanography State Oceanic Administration Qingdao 266061 China National Marine Data and Information Service Tianjin 300171 China Institute of Remote Sensing Applications chinese academy of Science Beijing 100101 China NOAA/NESDIS Center for Satellite Applications and Research Camp Springs MD 20746-4304 USA Department of Atmospheric and Oceanic Science University of Maryland Maryland 20742-2425 USA IMSG at NOAA/NESDIS NOAA E/RA3 WWBG Room 102 5200 Auth Road Camp Springs MD 20746-4304 USA.

In the satellite synthetic aperture radar（SAR） images of the Bohai Sea and Huanghai Sea,the authors observe sea surface imprints of wave-like patterns with an average wavelength of 3.8 *** SAR observations with sea surface wind fields and surface weather maps,the authors find that the occurrence of the wave-like phenomena is associated with the passing of atmospheric *** authors define the waves as atmospheric frontal gravity *** dynamical parameters of the wave packets are derived from statistics of 9 satellite SAR images obtained from 2.02.to 2.08.A two-dimensional linear physical wave model is used to analyze the generation mechanism of the *** atmospheric frontal wave induced wind variation across the frontal wave packet is compared with wind retrievals from the SAR *** CMOD-5（C-band scatterometer ocean geophysical model function） is used for SAR wind retrievals VV（transmitted vertical and received vertical） for ENVISAT and HH（transmitted horizontally and received horizontally） for RADARSAT-1.A reasonable agreement between the analytical solution and the SAR observation is *** new SAR frontal wave observation adds to the school of SAR observations of sea surface imprints of AGWs including island lee waves,coastal lee waves,and upstream Atmospheric Gravity Waves（AGW）.

关键词： Atmospheric gravity waves atmospheric front generation mechanism synthetic aperture radar

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血雉繁殖期活动区与栖息地特征

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四川动物 2004年第4期23卷 349-352页

作者：贾陈喜郑光美周小平张和民中国科学院动物研究所北京师范大学生物系四川卧龙自然保护区

采用无线电追踪技术并结合野外观察 ,对血雉繁殖期活动区与栖息地特征进行了研究。孵卵期 (5月 )雄鸟的活动区面积为 3. 90hm2.,雌鸟为 8 6 7hm2.。育雏期一个家族的活动区面积为 15 4 5hm2.(6月 )和17 3.hm2.(7月 )。繁殖季节相邻两... 详细信息

采用无线电追踪技术并结合野外观察 ,对血雉繁殖期活动区与栖息地特征进行了研究。孵卵期 (5月 )雄鸟的活动区面积为 3. 90hm2.,雌鸟为 8 6 7hm2.。育雏期一个家族的活动区面积为 15 4 5hm2.(6月 )和17 3.hm2.(7月 )。繁殖季节相邻两个繁殖对的活动区有重叠。血雉繁殖季节喜欢在北坡和东坡活动 ,这种选择与食物的分布有关。倒木在繁殖期栖息地选择中占有一定地位。用多元总体假设检验、单变量F检验及主成分分析法对实验样方与对照样方间进行了比较分析。结果表明。

关键词：繁殖期繁殖季节倒木育雏期卵期灌木林空地活动区面积特征

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Concentration-induced structural transition of regenerated silk protein

Concentration-induced structural transition of regenerated s...

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第八届全国生物力学学术会议

作者： HUANG Tao,HUO Bo (National Microgravity Laboratory/Center for Biomechanics and Bioengineering, Institute of Mechanics,chinese academy of {2.,{3. 100080,China)

Since 1980s,people paid high attention to silkworm and spider,which can spin out the solid protein fiber with excellent mechanical properties although this kind of protein,***,exists in silk gland in the gel state(Sto...

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中国江南地区夏季降水的统计降尺度预报(英文)

中国江南地区夏季降水的统计降尺度预报(英文)

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第2.届中国气象学会年会

作者： LIU Ying 1,2.FAN Ke1,and WANG Hui-Jun1 1 Nansen-Zhu International Research Centre,Institute of Atmospheric Physics,chinese academy of {2.,{3. 10002.,China 2.graduate university of the chinese academy of {2.,{3. {13.,China

本文基于多元线性回归,利用DEMETER资料和观测资料对中国江南地区的夏季降水进行统计降尺度研究。结果发现,统计模式在江南地区DEMETER7个模式回报的夏季降水与观测结果的空间距平相关系数提高显著,尤其是在中部和东北部地区,距平相关... 详细信息

本文基于多元线性回归,利用DEMETER资料和观测资料对中国江南地区的夏季降水进行统计降尺度研究。结果发现,统计模式在江南地区DEMETER7个模式回报的夏季降水与观测结果的空间距平相关系数提高显著,尤其是在中部和东北部地区,距平相关系数都大于0.42.超过95%信度）甚至超过0.53.超过99%信度）。同时,均方根误差（RMSE）在江南东北部地区也有显著降低,降尺度前后的均方根误差差值场大于1mm/d。降尺度之后的区域平均夏季降水距平时间序列能够抓住观测场的主要特征,模式原始结果与观测的时间序列的相关系数的变化范围为-0.2.到0.2.,在实施降尺度之后,相关系数的变化范围提高到0.52.0.69。

关键词： statistical downscaling DEMETER Southeastern China summer precipitation anomaly

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Studies on the Relationship between Production of Oxygen Free Radicals and Cardiac Failure of Coronary Artery Disease

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心脏杂志 1991年第2期 55-59+64页

作者： Chen Lihua~1, Zhang Yimin~1, Bai Buyun~3. Zhu Miaozhang~1, Zhao Baolu~2. Hou Jingwu~2. Xin Wenjuan~2.(~1 Department of Physiology, Fourth Military Medical {3., Xi'an ~2.Institute of Biophysics, Academia Sinica, beijing ~3.Department of Cardiovascular Disease, 514 hospital, beijing)

In this paper, the relationship between Oxygen Free Radicals(OFR) and cardiac failure of Coronary Artery Disease(CAD)was studied. The authors analyse the release of OFR, as measured by Lumin-dependent chemiluminescence, from the polymorphonuclear leukocytes(PMN); the activity of plasma superoxide dismutase (SOD) and the concentration of malondialdehyde(MDA)in patients of CAD with heart failure. The results showed that compared with the health controls and the group of CAD without heart failure, the release of OFR in respiratory burst of the PMN stimulated with PMA(phorbol myristate acetate)and the concentration of MDA in plasma were significantly increased(p<0.05) and the activity of SOD was markedly lower(p<0.05)in the group of CAD with heart *** suggests that the enhanced production of OFR by PMN, the increased concen tration MDA in plasma and the decreased SOD might be associated with the genesis and development of cardiac failure, The use of agents that reduce the amount of OFR would be of value in the prevention and treatment of cardiac failure.

关键词： free radicals, Oxygen Superoxide dismutase Malondialdehyde Heart failure, congestive

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Detection and analysis of QTLs for ferrous iron toxicity tolerance in rice

Detection and analysis of QTLs for ferrous iron toxicity tol...

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江苏省遗传学会第七届代表大会暨学术研讨会

作者： Jiang Ling1 Zhou Feng-li1 Wang Song-feng1 Zhai Hu-qu2.Wan Jian-min1,2. (1State Key laboratory of crop genetics and germplasm enhancement, Nanjing Agricultural university, Nanjing 2.0095, People’s Republic of China 2.Crop Institute, chinese {2. of Agricultural {3., beijing 100081, People’s Republic of China )

＜正＞The gleyic paddy soils are widely distributed in the world, estimated to cover 7.5 to 8.0 million hectares in China. The ferrous iron toxicity in the gleyic paddy soils is reported to reduce rice yield by 10-2.%...

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Cryptochrome 1 mediates blue light induction of 4-coumarate:CoA ligase-3.gene expression and flavonoids accumulation in Arabidopsis

Cryptochrome 1 mediates blue light induction of 4-coumarate:...

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从植物科学到农业发展——2.12.国植物生物学大会

作者： Jianzhong Lin~(1§),Xiaoying Zhao~(1§),Dongying Tang~1,Ming Guo~1,Derong Liu~1,Xuanming Liu~(1*),Chentao Lin~3.Bin Liu~(2.) 1College of Life sciences,Hunan university,Changsha 410082.China. 2.Institute of Crop Science,{2. {3. of Agricultural sciences,beijing 100081,China. 3.Department of Molecular,Cell and Developmental Biology,university of California,Los Angeles,Los Angeles,CA 90095,USA.

Cryptochrome 1(CRY1) is a blue light receptor regulating photomorphogenesis and flavonoid biosynthesis in *** enzyme 4-coumarate:CoA ligase(4CL) plays a key role in the biosynthesis of plant secondary compounds at divergence point from general phenylpropanoid metabolism to several major branch *** involvement of 4CL in the lignin biosynthesis have been extensively studied,whereas the roles of 4CL in the flavonoid biosynthesis are remain largely *** this study,we analyzed the transcription levels of 4CL family genes,4CL1,4CL2.4CL3.and 4CL5,and the flavonoids content in the Arabidopsis photo receptor *** results showed that the 4CL3.expression and flavonoids accumulation were mainly induced by CRY 1-mediated blue light signal transduction pathway and synergistically by *** the conditional nuclear localization of CRY 1 was investigated,and the results showed that the transcription levels of 4CL3.and the flavonoids content in 3.S::CRY1-GR increased several times in the presence of Dexamethasone,indicating that the 4CL3.expression and flavonoid biosynthesis were induced by nuclear CRY 1 rather than cytoplasmic CRY ***,the 4CL3.expression profile was found to be highly correlated with the chalcone synthase gene (CHS),a known key enzyme in flavonoid biosynthesis,suggesting that 4CL3.is mainly involved in the flavonoid biosynthesis rather than lignin *** with that of wild type,the flavonoids content was increased 3.5 times in the 4CL3.over-expressing transgenic plants and reduced 2.-40%in the 4cl3.*** we propose that the 4CL3.is a major enzyme involved in the flavonoid biogenesis pathway regulated by nuclear CRY1 in response to blue light.

关键词： Cryptochrome 4CL3 flavonoid phenylpropanoid Arabidopsis

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An Empirical Estimation of Effects of Priority Forestry Programs on Farmers’ Incomes in China

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chinese Forestry Science and Technology 2008年第1期7卷 1-12页

作者： LIU Can1 CHEN Hua2.LV Jinzhi1 LI Nannan3.XING Xiangjuan4 1. China National Forestry Economics and Development Research Center, beijing 100714, P. R. China 2. Department of Economics, Shandong {3. of Economics and Finance, Ji’nan 2.0014, P. R.China 3. College of Economics and Management, beijing Forestry {3., beijing 100081, P. R. China 4. College of Management, Nanjing Audit {3., Nanjing 2.1815, P.R. China

China has launched six Priority Forestry Programs (PFPs) since 1998, i.e. the Natural Forest Protection Program, the Cropland Conversion to Forest and Grassland Program, Sandification Control Program for the Vicinity of beijing & Tianjin , Wildlife Conservation and Nature Reserve Development Program, Forest Industrial Base Development Program and Shelterbelt Development Programs for regions such as Three North and the Yangtze River Catchments. The Government of China has made different policies for these PFPs, such as subsidies, low-interest loans and revenue offsets. Using a fixed-effect model and panel data from 2.3.3.households in 9 counties of Sichuan, Hebei, Shaanxi, and Jiangxi provinces, this paper studies effects of PFPs on farmers’ incomes. The empirical results indicate that the effects of PFPs on farmers’ incomes are mixed. Overall, the impact of Conversion of Cropland to Forestland and Grassland Program is significantly positive, whereas that of the Natural Forest Protection Program and the Sandification Control Program around beijing & Tianjin is negative. To a lesser extent, the Shelterbelt Development Programs have a positive impact. In the meantime, different effects of PFPs on farmers’ incomes are also mixed for different provinces and different households are also mixed.

关键词： Priority Forestry Programs (PFPs) farmers’incomes fixed-effect model panel data forest economics

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Nonlinear Optical Loop MirrorUsed to Compensate the Second Order Distortion in Analog Link

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chinese Journal of Lasers 1997年第1期B6卷 49-52页

作者： HE Huajie HAN Yuguo GU Wuanyi LEE Guorui XU Daxiong(beijing university of Posts and Telecommunications,beijing 100088,China) beijing Univ of Posts and Telecommunications Beijing China

The change of the slope of the tansmissivity of a nonlinear optical loop mirror(NOLM) at given wavelength by adjusting the polarization in the loop is reported. The interaction between the transmissivity of NOLM and laser chirping can compensate the total second order distortion produced by all elements in the link dramatically under certain conditions.

关键词： nonlinear optical loop mirror second order distortion Er-doped fiber amplifier

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大兴安岭北坡落叶松林火后植被演替过程研究

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生态学杂志 2004年第5期23卷 35-41页

作者：王绪高李秀珍贺红士冷文芳问青春中国科学院沈阳应用生态研究所

采用由植被空间序列推断时间系列的方法 ,分析大兴安岭呼中林区近 2.0年来不同火烧迹地植被变化情况。结果表明 ,森林火后初始 ,植物尤其是草本物种迅速增多 ,火烧迹地的植被主要由草本所占据 ,但随着时间的推移 ,草本物种不仅在数量上... 详细信息

采用由植被空间序列推断时间系列的方法 ,分析大兴安岭呼中林区近 2.0年来不同火烧迹地植被变化情况。结果表明 ,森林火后初始 ,植物尤其是草本物种迅速增多 ,火烧迹地的植被主要由草本所占据 ,但随着时间的推移 ,草本物种不仅在数量上有明显减少 ,在物种组成上有很大的变化 ,而且盖度也逐渐减少。灌木及乔木物种由于种类较少 ,在种类及组成上演替初期变化不如草本明显 ,但是盖度却逐渐增多。在本地区火后植被次生演替过程中 ,高频物种所占的比例较高且呈上升趋势 ,这明显有悖于Raunkiaer频度定律关于在相对稳定的群落中高频物种所占的比例应相对较低的规律。另外 ,不同火烧迹地间灌木的物种相似度明显高于草本的物种相似度 ,火烧年份相近的火烧迹地上的草本物种相似度要明显高于火烧年份远的草本物种相似度 ,但灌木间的物种相似度却没有出现这种现象 ,没有明显的规律。

关键词：大兴安岭火烧迹地演替

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